Nachi MR35 vs Yaskawa Motoman GP50: Robot Comparison
Updated: 2 hours ago
IN A NUTSHELL
🔎 THE KEY DIFFERENCE Yaskawa Motoman GP50 has the higher stated load capacity and longer stated reach. Those figures help shortlist it for heavier loads or wider layouts, but do not prove a faster production cycle. Their 7- and 6-axis mechanisms also offer different movement options. |
→ CONSIDER Nachi MR35 (35 kg floor-mounted reference) Consider it when its stated load and reach already cover your task and its controls fit your equipment. This article compares 35 kg and a 2,050 mm stated reach; include the gripper and part in the load. |
→ CONSIDER Yaskawa Motoman GP50 Consider it when additional load capacity and reach matter. This article compares 50 kg and a 2,061 mm stated reach; include the gripper and part in the load. |
💡 THE TAKEAWAY Check the required tool angles and approach path: different axis counts change movement options. Choose only after both suppliers demonstrate the loaded task and quote the same complete installation. |
Nachi MR35 vs Yaskawa Motoman GP50 is a choice about assembly and machine tending. Nachi MR35 (35 kg floor-mounted reference) and Yaskawa Motoman GP50 differ in their working envelope, loading assumptions and engineering ecosystem. A useful decision starts with the exact mechanism and process, then checks whether either robot can execute the required path with the real tool attached. This comparison separates documented specifications from application-level engineering judgments.
Nachi MR35 vs Yaskawa Motoman GP50: quick verdict
Shortlist Nachi MR35 for 35 kg industrial handling within the documented 2050 mm working reference. Shortlist Yaskawa Motoman GP50 for 50 kg industrial handling within the documented 2061 mm working reference. Neither is a universal winner: a robot that can carry the load may still fail the fixture-access, controller or maintenance requirements.
The numerical comparison below uses Nachi MR35 (35 kg floor-mounted reference) against Yaskawa Motoman GP50. The stated model scope matters when comparing later revisions or differently equipped installations. Published repeatability describes return to a taught position under specified conditions; it does not establish complete-cell accuracy or prove a faster production cycle.
Specifications and exact configuration scope
Criterion | Nachi MR35 | Yaskawa Motoman GP50 |
|---|---|---|
Comparison configuration | Nachi MR35 (35 kg floor-mounted reference) | Yaskawa Motoman GP50 |
Payload used for comparison | 35 kg | 50 kg |
Reach / motion-area reference | 2050 mm | 2061 mm |
Axes | 7 | 6 |
Repeatability for this scope | ±0.07 mm | ±0.03 mm |
Controller reference | Matched Nachi FD-generation control package | YRC1000 |
Purchase-price basis | Configuration-specific quotation | Configuration-specific quotation |
Purchase pricing | Request a configuration-specific quote | From $45,000 (arm list price) |
Read the reach row together with the geometric notes below. Manufacturers may specify an arm-link sum, a wrist-centre motion area or reach to the flange; those dimensions are not interchangeable. The table does not establish access to every point at every tool angle. Controller references identify reviewed packages, and actual compatibility must be confirmed by model, software version and region.
Nachi MR35: design and configuration
Nachi MR35 is compared at 35 kg and 2050 mm in the exact selected configuration. The selected configuration is the seven-axis MR35 at 35 kg, 2050 mm and ±0.07 mm repeatability. The source family review also describes MR50, but its 50 kg load chart is not applied to MR35. The extra arm axis supplies another posture degree of freedom rather than additional payload or guaranteed fixture access. Demonstrate a complete joint path around the machine, including elbow movement, cable sweep, singularity handling and recovery after an interrupted transfer. The manufacturer lists a 745 kg arm and IP67 body/upper-arm protection. This comparison uses the standard floor reference from the European specification. Other regional wall, angled or inverted packages require explicit installation approval, support reactions, lifting and maintenance provisions; they are not assumed features of every quoted unit. Protection ratings do not establish resistance to arbitrary coolants, solvents or a particular washdown process. Match the delivered Nachi FD-generation cabinet, firmware, programming environment, machine I/O and safety functions. Include the complete gripper, retained component, adapters, sensors and hose forces in wrist moments and inertia. Seven axes can help arrange a robot to the side of a machine, but the resulting access and cycle depend on the actual fixtures and programmed path. Repeatability is repeated-pose performance, not calibrated absolute accuracy or finished-part quality. Validate foundations, safeguarded entry, stopping distance, load retention and the restart sequence. Confirm the named generation, supplied new or used condition, service coverage, spare parts and exact quotation rather than inferring current stock from manufacturer documentation.
Yaskawa Motoman GP50: design and configuration
The Yaskawa Motoman GP50 uses 6 arm axes with 50 kg payload, 2061 mm working reference and ±0.03 mm repeatability in the reviewed configuration. It is paired with YRC1000. This is the named general-purpose GP handling configuration. Its rated load includes the end effector and carried component; wrist moment, inertia, mounting reactions and the full loaded path can constrain the application before nominal payload is reached. Match the offered YRC controller and process interfaces rather than transferring options from another GP model.
For this pair, Yaskawa Motoman GP50 offers 50 kg over the stated 2061 mm reference, compared with 35 kg and 2050 mm for Nachi MR35 example. Yaskawa Motoman GP50 has the larger stated distance by 11 mm, but this difference is only a preliminary layout indicator because reference points and joint envelopes can differ. Locate the actual fixture in each manufacturer model before treating this as usable extra working space.
Payload, tooling and a worked load example
Consider an illustrative total wrist load of 28 kg: a 7 kg tool and adapter package carrying a 21 kg part or product group. This arithmetic leaves 7 kg below the Nachi MR35 example’s nominal limit and 22 kg below Yaskawa Motoman GP50’s nominal limit. These are mass differences, not safety factors or a validated load approval. A heavy camera, valve block or retained material must be included before recalculating the total.
The example exposes the practical question: is the application limited by mass, by tool offset or by wrist rotation? Nachi MR35 is the lower-or-equal nominal payload choice in this pair. Yaskawa Motoman GP50 offers more or equal headline mass capacity, but that alone cannot approve an eccentric fixture. Moving the same mass farther from the flange increases the moment, and spreading it increases rotational inertia. Manufacturer load diagrams and the actual centre of gravity govern the final allowable motion.
Model the empty, partly loaded and fully loaded tool states separately. A vacuum layer gripper, a weld torch with hoses or an inspection head may change its effective loading during the cycle. Set the controller’s load data for each supported state and validate the transition logic. A payload table cannot predict acceleration derating, cable pull or transient reactions at a machine interface.
Reach, orientation and fixture access
Build the same cell model for both candidates: base height, machine opening, fixture datum, maximum part size, tool extension and access for maintenance. Nachi MR35 (35 kg floor-mounted reference) provides a stated 2050 mm reference, while Yaskawa Motoman GP50 provides 2061 mm. Check the deepest production pose and the return path with the loaded tool. An arm that just touches the target at full extension may have little freedom left to turn, retract or avoid a door.
For assembly and machine tending, test the gripper jaws in their open and closed positions. Include feeder replenishment, rejected-part disposal and tool changes. Check wrist flips and singularity avoidance along the whole path. A compact robot can fit a small fixture well, while a longer arm can simplify station placement; neither geometric benefit can be assumed without the actual model.
Precision and throughput: compare the same task
The comparison uses ±0.07 mm for Nachi MR35 and ±0.03 mm for Yaskawa Motoman GP50. These figures should be read in their documented configuration scope. Repeatability is not absolute accuracy, camera calibration accuracy or finished-part capability. Fixture variation, TCP calibration, thermal conditions and tool compliance can dominate the error at the process point, especially when the tool extends far from the flange.
Ask each integrator to execute the same representative path with the same payload model, tool length, process dwell and stop conditions. Report transfer time, settling time, process time and waiting time separately. Published standard cycles often use different loads and distances; dividing one catalogue cycle by another would not establish the production advantage of Nachi MR35 over Yaskawa Motoman GP50. Use a measured or validated application cycle before assigning a throughput benefit.
Programming, controls and production integration
Nachi MR35 is paired here with Matched Nachi FD-generation control package, while Yaskawa Motoman GP50 uses YRC1000. Controller names identify the review baseline rather than a guarantee that all interface options are included. Compare the actual software revision, teaching workflow, diagnostic tools, fieldbus licences and recovery procedures. An existing trained team and reusable production code may outweigh a small dimensional advantage. Obtain a demonstration of the same machine handshake and interrupted-cycle recovery on both platforms.
Specify the PLC handshakes before ordering: cycle request, ready, busy, complete, fault, part present and recovery authorization. Define how an interrupted operation resumes without repeating a dangerous or quality-critical action. Vision, force sensing, fieldbus communication and external-axis coordination must be checked as explicit included or optional functions. An Ethernet connector does not by itself prove that a particular industrial protocol or software interface is licensed and supported.
Configuration and communication detail
Integration reference | Nachi MR35 | Yaskawa Motoman GP50 |
|---|---|---|
Control package | Matched Nachi FD-generation control package | YRC1000 |
Documented interface baseline | Specify required interfaces in the delivered package | Specify required interfaces in the delivered package |
Programming baseline | Named platform software and supported API; confirm supplied version | Named platform software and supported API; confirm supplied version |
Integration acceptance | Test the actual machine handshake and controlled recovery | Test the same handshake and controlled recovery |
Protection, installation and maintenance
Match the precise protection package to the process. Standard, protected, cleanroom, foundry and washing configurations can have different seals, services and maintenance requirements. Do not transfer the best optional IP or cleanroom rating to an unprotected base model. Check the controller location, cable bend radius, available lifting access and base reactions with the installer.
Treat safe operation as a property of the complete task and installation. Include the tool, sharp workpiece edges, trapping points, dropped loads and machine access. These robot systems require task-specific safeguarding; payload or compact size does not establish safe unguarded operation. Plan tool replacement and fault recovery without dismantling the whole installation, and include connector access, lubrication and spare-cable replacement in the maintenance layout.
Price and lifecycle value
Published arm list prices: Yaskawa Motoman GP50 is listed from $45,000. Request configuration-specific quotations for Nachi MR35 and Yaskawa Motoman GP50. An arm-only number is not the price of a commissioned production cell. Ask for separate line items for controller, pendant, communication options, end effector, safety equipment, installation, acceptance, training and warranty. Price changes, regional support and included software can reverse an apparent hardware-cost advantage. Compare the same delivered scope before calculating payback.
Compare the installed production scope: tool, fixtures, sensing, guarding, machine interface, programming, acceptance and training. For small-parts automation, include feeders, vision calibration, nests and rejected-part handling. Keep purchase cost and recurring support costs separate. No payback figure is defensible until the actual cycle, yield, utilization and installation quotation are known.
Selection and acceptance plan
Decision gate | Nachi MR35 | Yaskawa Motoman GP50 |
|---|---|---|
Strongest documented fit | 35 kg industrial handling within the documented 2050 mm working reference | 50 kg industrial handling within the documented 2061 mm working reference |
Main boundary | Tool mass, wrist moments and access constrain the headline specification. | Confirm exact configuration, controller, wrist loading and installation envelope. |
Required approval | Exact Nachi variant, tool load and validated process path | Exact competitor revision, tool load and validated process path |
Acceptance evidence | Agreed parts, path, quality and recovery results | The same agreed parts, path, quality and recovery results |
Advance Nachi MR35 when 35 kg industrial handling within the documented 2050 mm working reference solves the real constraint and its selected configuration passes the load and access checks. Advance Yaskawa Motoman GP50 when 50 kg industrial handling within the documented 2061 mm working reference provides the more suitable process arrangement. Reject either candidate if a mandatory pose, protection requirement or controller function cannot be demonstrated. A purchasing shortlist should preserve these conditions instead of converting a single catalogue advantage into a blanket recommendation.
Before acceptance, agree the representative parts, tool states, operating sequence and quality criteria with both suppliers. Demonstrate cold start, normal production, rejected parts, interrupted cycles and controlled recovery. Record the final tool data and software backup. This turns the comparison into a repeatable purchasing decision and helps prevent a later fixture change from invalidating the original robot selection.
Motion architecture and functionality
Nachi MR35 has 7 arm axes and Yaskawa Motoman GP50 has 6 arm axes. A seven-axis arm has an additional posture degree of freedom: the elbow can move while preserving a tool pose where the joint limits permit. This can help around obstacles, but also requires cable and full-path validation. Compare tool detection, sensing, machine I/O and recovery as separate delivered functions.
Industries and application fit
For Nachi MR35 vs Yaskawa Motoman GP50, use the actual part and process as the industry filter. Electronics, manufactured-component handling and machine tending are candidate uses when their tool mass, access and quality requirements fit the documented configurations. These are application-selection judgments, not claims that either exact model is installed at a named customer. A food, medical-device or clean-production application additionally requires the correct material, lubrication and protection package; the base model name does not establish hygienic or cleanroom compliance.
Selection issue | Nachi MR35 | Yaskawa Motoman GP50 |
|---|---|---|
Tool and workpiece mass | 35 kg named scope; include the complete tool | 50 kg named scope; include the complete tool |
Working reference | 2050 mm | 2061 mm |
Main configuration boundary | Tool mass, wrist moments and access constrain the headline specification. | Confirm exact configuration, controller, wrist loading and installation envelope. |
Process approval | Demonstrate the actual loaded path and recovery | Demonstrate the same loaded path and recovery |
Frequently asked questions
Which robot is better for this application?
Nachi MR35 is the stronger starting point for 35 kg industrial handling within the documented 2050 mm working reference, while Yaskawa Motoman GP50 is worth shortlisting for 50 kg industrial handling within the documented 2061 mm working reference. The final choice depends on the real loaded path, required protection, controls and acceptance results. Neither a higher payload nor a longer reach establishes a universal winner.
What payload should I use for the comparison?
Use 35 kg for the specified Nachi MR35 (35 kg floor-mounted reference) example and 50 kg for Yaskawa Motoman GP50, subject to all documented load and orientation conditions. Include the tool, adapters, sensors and carried part. Confirm exact configuration, controller, wrist loading and installation envelope.
Does the stated reach guarantee access to my fixture?
No. The comparison gives 2050 mm for Nachi MR35 and 2061 mm for Yaskawa Motoman GP50 using the stated model references. Joint limits, reach reference points, wrist orientation, tool length and collisions determine whether the actual fixture is accessible. Simulate the full approach and exit path.
Can I use the best specifications from every family variant?
No. Keep each named model and revision intact. A different arm length, controller generation or protection option can change the relevant specification. Do not combine one version’s maximum payload with another version’s maximum reach.
Is repeatability the same as finished-part accuracy?
No. The stated values are ±0.07 mm for Nachi MR35 scope and ±0.03 mm for the competitor scope. Finished-part results also depend on fixtures, TCP calibration, sensing, thermal conditions and tool compliance. Validate the actual process instead of treating catalogue repeatability as a complete accuracy guarantee.
How should purchase prices be compared?
Use current written quotations for Nachi MR35 and Yaskawa Motoman GP50 with the same arm, controller, software, tooling and commissioning scope. This comparison does not represent an ATC sales offer or stock confirmation. Historical review figures are not a substitute for a configuration-specific purchase quotation.
Can these robots operate safely next to people without guarding?
These specifications do not establish a safe unguarded installation. Assess the complete task, tool, load and machine interface, then implement and validate the required safeguarding and operating procedures. Do not infer collaborative operation from a compact arm, limited payload or education setting.
What should an acceptance test compare?
Use the same parts, actual tool load, fixture locations, path and quality criteria for Nachi MR35 and Yaskawa Motoman GP50. Check production timing, settling, interruptions and recovery. Include the most difficult loaded approach and retreat. Approve the exact delivered configuration and preserve its final settings.
Related ATC reviews
Specifications describe the model scope identified above. Purchase pricing requires a current configuration-specific quotation. Confirm current manufacturer documentation, local supply, controller compatibility and the exact configuration before purchase.
